Yesterday evening, I had the privilege of attending the Triangle USGBC’s “Talk & Walk” at the Wake County Justice Center. The 576,996 square foot Justice Center was completed 6 months early and over 30 million under budget. (The final cost, including soft costs, came in at ~$141,000,000). Now that’s what I call a LEED project done right!
Interestingly, the County did not endeavor for a LEED Silver rating– the plan was to aim for a Certification. However, as the process unfolded, the Team kept meeting the goals and points for a Silver certification without any appreciable additional costs.
The end result? An “iconic but energy efficient building,” according to Tim Ashby, current Wake County Facilities Project Manager. Tim was initially involved in the Project while working at O’Brien Atkins, which served as the architecture firm for the Project under the direction of Architect Andrew Zwiacher.
The Project was a Construction Manager at Risk project, involving a joint venture between Balfour Beatty Construction and Barnhill Contracting Company. Did the contract type contribute to the success of the Project? According to Project representatives, it likely was responsible for the 6 month early completion due to the high level of coordination.
Energy efficiency in the Building comes from the low flow plumbing (total water savings of 45%, 15% more than LEED requires), programmable and natural daylighting, and almost 98% construction waste diversion.
Another interesting legal factoid: BIM (Building Information Modeling) was utilized. Through BIM, a conflict was discovered in the space allocated for the air handling units versus the planned size of those units. This discovery enabled a change to the AHU units (to make them wider and shorter) prior to manufacturer, saving untold delays in time and increases in cost. We’ll talk more later about the pros (and cons) of BIM, but suffice it to say it worked very well on this Project.
If you haven’t been by to see the Justice Center yet, please do. It’s a great design (17 elevators!), and a great change from the old Courthouse across the street.
Have you seen the Justice Center yet? Thoughts on the design? Share in the comments below.
Last week, I had the fortune to join the Triangle USGBC for its “Talk & Walk” about the RDU Terminal 1 renovation project and its sustainable features. For those who haven’t had the chance, I recommend you check out the new terminal specifics the next time you find yourself jet-setting in or out of Raleigh on Southwest airlines.
Terminal 1 has been in operation since 1981, with the last upgrade in 1991. The 2010 opening of the new Terminal 2 had, until now, cemented Terminal 1’s status as the airport’s ugly duckling- complete with the long, featureless metal addition abandoned to times past.
While the $68 million Terminal 1 renovation cannot compete with the Terminal 2 $580 million budget, it nevertheless is an entirely re-imagined space. Better traffic flow (yes, you can now find where to go through security!), increased daylighting, a new canopy system, and commercial curb canopy (see photo) all complete the new architectural image.
Clark Nexsen principals Irvin Pearce and Doug Brinkley explained the renovation, which included energy saving escalators- the first escalator system in North Carolina that slows down during non-use. Other sustainable features include LEED complaint flooring, 86% structural building re-use (slabs on grade, composite decks, and structural roof deck), and 28% reuse of exterior walls.
Other highlights of the construction include:
- An insulated translucent exterior wall panel (Kalwall) to address both security concerns and reduce electrical lighting loads
- A requirement that lease tenants comply with LEED requirements on the upfit of tenant space, as part of an Innovative Design LEED credit
- Use of a 2″ metal panel with reticulating foam seals as a rain screen to produce a well insulated building
Another nice touch– the art above the baggage claim area. Entitled “Highwire Travelers”, artist Gordon Huether’s sculpture consists of 7 figures suspended above the terminal floor, some balancing luggage on long poles. (see photos)
The project is awaiting LEED certification from the US Green Building Council.
Have you seen the “new” Terminal 1? What are your thoughts and impressions?
Photos by Melissa Brumback.
What are your top construction building projects in North Carolina? Do you have a “short list”? Author Ralitsa Golemanova of JW Surety Bonds does, and she has the reasoning behind them. Ralista’s Top 5, which all “present a different facet of exceptional modern design and construction” are presented below.
Her list, in no particular order, includes:
1. The North Carolina Museum of Art’s West Building Expansion
The 127,000 square-feet West Building Expansion of the North Carolina Museum of Arts won the 2011 American Institute of Architects (AIA) Honor Award for Architecture. The Building is largely made of aluminum panels. One of its specificities is that it does not have any windows. Instead, visibility is ensured through 360 skylights that allow delicate natural light to enter the inner galleries.
2. The Bank of America Corporate Center in Charlotte
The skyscraper is 871 feet tall and was completed in 1992, is allegedly the tallest building between Atlanta and Philadelphia, and can be seen from 35 miles away.
3. The Bell Tower Development project at UNC-Chapel Hill
The huge $175 million Bell Tower Development includes a 710 car parking deck, a 25 thousand-ton chilled water plant, a new Genome Science Laboratory Building which will provide approximately 210,000 square feet of modern classrooms, laboratories and offices including nine wet labs, four bioinformatics labs, a 250 seat lecture hall, a 450 seat lecture hall, an 80 seat classroom, and four 30 seat seminar rooms.
4. The Biomanufacturing Research Institute & Technology Enterprise (BRITE) at NC Central
The BRITE construction was a $17.8 million endeavor, which is spread out over 59,900 square feet and complements the existing science buildings. The project includes a four-story 65,000 square foot building to provide hands-on learning experiences for biotechnology students.
5. The James B. Hunt, Jr. Library at NC State
Priced at $93.75 million, the 221,122 square feet library is designed with maximized light and views of nature in mind. With its LEED Silver certification, it provides natural heating and cooling, as well as usage of rainwater with the help of green roofs and rain gardens.
What about you? Do you have a list of favorites?? Share in the comment section of the blog.
Photos of Art Museum and Hunt Library both courtesty of Wikipedia via cc.
The North Carolina Department of Transportation (NCDOT) has shut down Bonner Bridge on the Outer Banks this week due to emergency safety concerns. The life safety issues were discovered after routine sonar scanning identified excessive scouring (i.e., sand erosion) on the support structures of the bridge.
The bridge, erected in 1963, is the only road over Oregon Inlet, so the NCDOT is providing extended ferry service during the bridge repairs, which could take as long as 90 days.
The Bonner Bridge has been slated for replacement for several years following damage from Hurricane Irene, but legal challenges from environmental groups as to the location of the replacement have prevented DOT from breaking ground on a $215.8 million repair contract.
As of midday on Friday, December 6th, NCDOT engineers report the following:
· The dredge is on location and the anchors are set.
· The crew has been developing ideas on alternate discharge pattern/configurations etc.
· The Army Corps of Engineers 404 & DENR Water Quality Permits are issued.
· Permit modification for enlarged discharge area to allow flexibility in using the tides & attack angles to assist in filling scour holes has just been issued.
To read the positions and concerns of the environmental groups related to the bridge replacement, go to the Southern Environmental Law Center’s webpage.
Your turn: Now that the bridge is back in the news, what is your opinion as to where the replacement bridge should be located? Do the environmental groups’ contentions have merit? Share your thoughts in the comments below.
Photo (c) Smkybear.
Today, we have a *very* informative guest post by Mike Freiberg. Mike is a staff writer for HomeDaddys, a resource for stay-at-home dads, work-at-home dads, and everything in between. He’s a handyman, an amateur astronomer, and a tech junkie, who loves being home with his two kids. He lives in Austin.
It isn’t the biggest, or the flashiest—but it’s definitely the priciest
The new One World Trade Center (or Freedom Tower) has been a difficult project to get moving since it was announced nearly twelve years ago. Numerous architects and dozens of possible designs were considered, and ultimately scrapped, as the project underwent one reinvention after another. The project was finally completed May 10th of this year, rising to a symbolic 1,776 feet, and running up a bill of just under $4 billion—making it (by far) the most expensive skyscraper ever built.
For comparison, the Burj Khalifa, currently the tallest building in the world, dwarfs One WTC by over 1,000 feet, and is much more lavishly appointed—but was built for less than half the price ($1.5 billion). So where did One World Trade Center’s nearly $4 billion price tag come from?
The world’s first fortress skyscraper
The Freedom Tower designers had to juggle several competing priorities. The tower shouldered a heavy rhetorical burden, as a symbol of fortitude and resilience—but it also had to meet the pragmatic needs of a global financial hub on an extremely valuable piece of real estate. It was a tall order; but by far the most expensive and challenging aspect of Freedom Tower’s design was security—demonstrating that the lessons of the 9/11 attacks would be taken seriously.
From the exterior, One World Trade Center looks like any other skyscraper. Inside, though, it’s built like a tank—and incorporating (and concealing) these features was the greatest source of cost overruns during the tower’s seven-year build. Here are a few of the most impressive innovations.
A towering concrete base
Unlike most skyscrapers, One World Trade Center is set on a 20-story, windowless podium of highly reinforced concrete, built to withstand a 1,500 lb. truck bomb of the type used in the 1993 World Trade Center bombing. When completed, the podium will be sheathed in prismatic glass to conceal the blast walls. The podium uses 720,000 cubic feet of “iCrete”, an expensive designer concrete mixture capable of withstanding 14,000 pounds per square inch of pressure—nearly three times the compressive strength of normal high-rise concrete.
A colossal air-quality apparatus
While the exterior is fortified against explosions and impact, designers also considered the threat of biological and chemical attacks, as well as fire, sparing no expense for One World Trade Center’s internal air system. Each stairwell is composed of reinforced concrete, with a separate, pressurized air supply to keep them operational in the event of an emergency.
The building is also dotted with biological and chemical filters and detectors, as well as ventilation shafts that can quickly expel contaminants as soon as they are detected.
Fortified, secure elevator shafts
One World Trade Center’s elevators are encased in three feet of concrete, and serve as an internal “spine” for the building, to prevent collapse in the event that the steel exoskeleton gives way (as it did in the September 11th attacks). The tower contains 71 elevators, none of which have buttons—instead, the car identifies each passenger, and will only bring them to the floor for which they are authorized, at an impressive 23 miles per hour. It remains to be seen how smoothly this system will operate—the building will open late this year.
An integrated security and safety network
Perhaps unsurprisingly, Freedom Tower will feature over 400 closed-circuit surveillance cameras, networked security doors, temperature and air quality monitors, and automated elevators connected via a huge web of shielded communications cables. Security teams will have a constant stream of richly-detailed status reports from across the building, so that even minor problems like electrical failures or a buzzing smoke detector reach security instantaneously. Early on, this security grid will also incorporate airport-style checkpoints and electrified fencing on the tower grounds, but those measures will be phased out after several months of normal operation.
Of course, these mammoth security expenses have been highly controversial—what seems like an appropriate symbol of vigilance to some, manifests paranoia to others—but however you interpret them, it’s not all that surprising that One World Trade Center is now the world’s most expensive skyscraper.
Thanks, Mike, for the detailed information on the newest symbol in the NYC skyline.
What do you think about the Freedom Tower? Is it money well spent? Over-engineered to death? Share in the comments section, below.